Patent · US Expired

Plastic concentrate for photographic support material coatings

US5049595A · kind A · utility

9Cited by

6References

18Claims

0Family size

Assignee

Felix Schoeller GmbH & Co. KG · DE

Inventors

Ralf-Burkhard Dethlefs · Osnabrück, DE
Bernd Scholz · Osnabrück, DE
Wolfram Wysk · Belm, DE

Key dates

Filing date	Dec 11, 1989
Grant date	Sep 17, 1991
Priority date	—
Expiry date	Dec 11, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2423/00
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A plastic concentrate containing a pigment and/or filler for the production of a polyolefin coating compound for photographic support materials produced by means of a double screw extruder with degassing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.